%0 Journal Article %A Piotr Hajlasz %A Armin Schikorra %T Lipschitz homotopy and density of Lipschitz mappings in Sobolev spaces %J Annales Fennici Mathematici %D 2014 %P 593-604 %V 39 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5186/aasfm.2014.3932/ %R 10.5186/aasfm.2014.3932 %G en %F AFM_2014_39_2_a7